#include <cstdint>// IWYU pragma: keep
#include<iostream>// IWYU pragma: keep
#include <string>
#include<unistd.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<cstring>
#include"Log.hpp"// IWYU pragma: keep
#include"InetAddr.hpp"// IWYU pragma: keep

// .tcpclient server-ip server-port
int main(int argc,char*argv[])
{
    if(argc!=3)
    {
        std::cout<<"Usage: "<<argv[0]<<" server-ip server-port" <<std::endl;
        exit(0);
    }

    std::string serverip=argv[1];
    uint16_t serverport=std::stoi(argv[2]);

    //创建套接字
    int sockfd=::socket(AF_INET,SOCK_STREAM,0);

    if(sockfd<0)
    {
        std::cerr<<"create  socket error"<<std::endl;
        exit(1);
    }

    //2.注意：不需要显示的bind，但是一定要有 自己的IP和port，所以需要隐式的bind,OS会自动bind sockfd，用自己的IP和随机端口号
    struct sockaddr_in server;
    memset(&server, 0, sizeof(server));
    server.sin_family=AF_INET;
    server.sin_port=htons(serverport);
    ::inet_pton(AF_INET,serverip.c_str(),&server.sin_addr);

    int n=::connect(sockfd,(struct sockaddr*)&server,sizeof(server));
    if(n<0)
    {
        std::cerr<<"connect socket error"<<std::endl;
        exit(2);
    }
    
    while(true)
    {
        std::string message;
        std::cout<<"Enter #";
        std::getline(std::cin,message);
        write(sockfd,message.c_str(),message.size());

        char echo_buffer[1024];
        n = read(sockfd,echo_buffer,sizeof(echo_buffer));
        if(n>0)
        {
            echo_buffer[n]=0;
            std::cout<<echo_buffer<<std::endl;
        }
        else 
        {
            break;
        }
    }

    ::close(sockfd);
    return 0;
}